🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.31 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.61 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.02

Radius: 1.32

Gravity: 1.16 G

Time & Orbit

Eccentricity (e): 0.218

Orbit Range: 0.48 AU - 0.74 AU

Year: 308 Days

Day: 19.7 Hours

Environment

Temp: -121 °C

Axial Tilt: 32.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.67 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.14

Radius: 1.36

Gravity: 1.16 G

Time & Orbit

Eccentricity (e): 0.138

Orbit Range: 0.58 AU - 0.76 AU

Year: 354 Days

Day: 24.6 Hours

Environment

Temp: -131 °C

Axial Tilt: 3.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 25,694,932 km

• M1: 399,576 km (0.11 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.97 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 337.8

Radius: 13.9

Gravity: 1.75 G

Time & Orbit

Eccentricity (e): 0.026

Orbit Range: 0.94 AU - 1 AU

Year: 617 Days

Day: 7.8 Hours

Environment

Temp: -157 °C

Axial Tilt: 41.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 25,694,932 km

• M1: 173,085 km (0.077 R)
• M2: 699,370 km (0.103 R)
• M3: 1,132,905 km (0.073 R)
• M4: 1,734,438 km (0.118 R)
• M5: 2,315,027 km (0.03 R)
• M6: 2,844,304 km (0.04 R)
• M7: 3,635,677 km (0.108 R)
• M8: 4,497,810 km (0.107 R)
• M9: 5,077,950 km (0.109 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.83 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 86.8

Radius: 14.7

Gravity: 0.4 G

Time & Orbit

Eccentricity (e): 0.095

Orbit Range: 1.66 AU - 2 AU

Year: 1598 Days

Day: 11.4 Hours

Environment

Temp: -190 °C

Axial Tilt: 10.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 25,694,932 km

• M1: 182,958 km (0.118 R)
• M2: 808,128 km (0.117 R)
• M3: 1,558,810 km (0.103 R)
• M4: 2,205,222 km (0.097 R)
• M5: 3,854,090 km (0.026 R)
• M6: 4,321,284 km (0.047 R)
• M7: 4,938,824 km (0.051 R)
• M8: 5,775,375 km (0.116 R)
• M9: 6,313,778 km (0.09 R)
• M10: 6,946,876 km (0.109 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.63 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 873.5

Radius: 15

Gravity: 3.88 G

Time & Orbit

Eccentricity (e): 0.027

Orbit Range: 2.56 AU - 2.7 AU

Year: 2754 Days

Day: 11.4 Hours

Environment

Temp: -189 °C

Axial Tilt: 51.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 25,694,932 km

• M1: 186,549 km (0.098 R)
• M2: 665,411 km (0.066 R)
• M3: 1,635,703 km (0.057 R)
• M4: 2,282,415 km (0.054 R)
• M5: 2,848,493 km (0.115 R)
• M6: 3,361,315 km (0.104 R)
• M7: 4,689,744 km (0.029 R)
• M8: 6,458,290 km (0.097 R)
• M9: 7,106,647 km (0.059 R)
• M10: 7,605,257 km (0.107 R)
• M11: 10,223,668 km (0.039 R)
• M12: 10,983,176 km (0.03 R)
• M13: 12,258,798 km (0.086 R)
• M14: 14,159,289 km (0.099 R)
• M15: 16,625,859 km (0.103 R)
• M16: 17,396,288 km (0.105 R)
• M17: 19,547,655 km (0.039 R)
• M18: 21,546,881 km (0.107 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.47 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 300.4

Radius: 8.6

Gravity: 4.06 G

Time & Orbit

Eccentricity (e): 0.082

Orbit Range: 3.19 AU - 3.75 AU

Year: 4174 Days

Day: 7.3 Hours

Environment

Temp: -213 °C

Axial Tilt: 27.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 25,694,932 km

• M1: 107,262 km (0.038 R)
• M2: 446,400 km (0.112 R)
• M3: 881,281 km (0.086 R)
• M4: 1,316,312 km (0.075 R)
• M5: 1,693,149 km (0.102 R)
• M6: 2,063,403 km (0.105 R)
• M7: 2,472,554 km (0.081 R)
• M8: 3,101,912 km (0.066 R)
• M9: 3,736,506 km (0.03 R)
• M10: 5,238,319 km (0.118 R)
• M11: 5,792,130 km (0.115 R)
• M12: 6,695,402 km (0.111 R)
• M13: 9,744,656 km (0.098 R)
• M14: 10,978,539 km (0.11 R)
• M15: 11,800,729 km (0.031 R)
• M16: 13,110,159 km (0.07 R)
• M17: 15,202,285 km (0.075 R)
• M18: 15,554,439 km (0.104 R)
• M19: 16,803,581 km (0.119 R)
• M20: 20,277,393 km (0.107 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.21 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 339.2

Radius: 13.2

Gravity: 1.95 G

Time & Orbit

Eccentricity (e): 0.04

Orbit Range: 4.04 AU - 4.38 AU

Year: 5577 Days

Day: 8.2 Hours

Environment

Temp: -215 °C

Axial Tilt: 16.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 25,694,932 km

• M1: 164,109 km (0.109 R)
• M2: 650,152 km (0.029 R)
• M3: 1,385,276 km (0.092 R)
• M4: 1,962,724 km (0.09 R)
• M5: 2,506,213 km (0.114 R)
• M6: 2,970,116 km (0.086 R)
• M7: 4,576,049 km (0.064 R)
• M8: 5,068,675 km (0.087 R)
• M9: 6,763,170 km (0.047 R)
• M10: 8,051,058 km (0.073 R)
• M11: 8,478,459 km (0.11 R)
• M12: 9,186,506 km (0.047 R)
• M13: 11,774,400 km (0.087 R)
• M14: 12,751,872 km (0.116 R)
• M15: 13,532,175 km (0.032 R)
• M16: 13,985,007 km (0.112 R)
• M17: 15,898,663 km (0.07 R)
• M18: 17,622,031 km (0.098 R)
• M19: 19,088,090 km (0.075 R)
• M20: 20,305,069 km (0.113 R)
• M21: 22,053,569 km (0.116 R)
• M22: 23,682,241 km (0.036 R)
• M23: 24,563,222 km (0.077 R)

Kuiper Belt

Range: 30 - 54 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 355 - 17,152 AU

Composition

Type: Cometary Reservoir

System's final boundary, containing trillions of icy planetesimals.

Gravitational Limit